random-float is a procedure that reports back a random number anywhere between 0 and the given number, both whole numbers and not. For instance, random-float 10 could resolve to 6.9105, 4.2, 0.451, 0.0000001, 9.99999, etc.

In the common case where you want to get a random value that is somewhere in between the minimum and maximum x or y coordinates, you can use the built-in procedures random-xcor and random-ycor, which also report back non-integer values.

Note that due to the way random-float is defined, random-float 5.0 could, however unlikely, report back 0.0, but it could never report back 5.0.

In this model, random-float is used to randomly place a dart somewhere on (or off of) a dartboard. By using random-float, we are ensuring that the dart could land at every possible point on the dart board, not just integer points like random would produce.